I am making a car and decided to make separate pieces for each piece (hood, trunk, doors, etc.). I am making each piece by hand by creating a surface and then smoothing it and adding subsurf. The problem I am having is getting all the edges to match up. There are little holes where two parts meet and its especially messy where 3 or 4 parts meet. I can adjust this but it is tedious and never looks quite right. Is there a better way to make sub-surfed edges fit nicely together?